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Finding the Fourth Proportional to 19,898.84, 27,458.12 and 10,945.51

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Solution

The fourth proportional to 19,898.84, 27,458.12 and 10,945.51 is: 15,103.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,898.84 : 27,458.12 = 10,945.51 : x
  2. Step 2: Convert to fraction form
    19,898.84/27,458.12 = 10,945.51/x
  3. Step 3: Cross multiply
    19,898.84x = 27,458.12 × 10,945.51
  4. Step 4: Simplify right side
    19,898.84x = 300,542,935.02
  5. Step 5: Solve for x
    x = 300,542,935.02/19,898.84
  6. Step 6: Final answer
    x = 15,103.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.